The presenters are joined by Barney the dog – an Irish setter-dachshund cross owned by Helen.

However the show's cats Socks and Cookie and Shelley the tortoise have not made the move, though they will still be appearing from time to time.

The famous Blue Peter garden has been recreated on the roof of the new headquarters. The iconic theme tune has been remixed for the new series with redesigned credits. And the traditional sofa set-up has also been replaced by a 'media hub'.

By next year, viewers will be able to interact with celebrities and phone in via a webcam and email.